PRODUCTIVITY GROWTH IN GOODS AND SERVICES ACROSS THE HETEROGENEOUS STATES OF AMERICA
运用双重增长核算框架，研究1980-2007年美国各州商品与服务部门的多要素生产率增长，发现商品部门生产率高且趋同，服务部门低且不趋同，原因在于实际用户成本下降和工资增长差异。
In this study, we examine the importance of multifactor productivity ( MFP ) growth in goods and services for U.S. States during 1980–2007 by applying the dual growth accounting framework. We find that MFP growth was relatively high and converged in the goods sector, but was low and did not converge in services. Although low growth in MFP in services was due to declining real user cost, particularly in real estate services, the lack of convergence itself was due to variation in wage growth. We also document that while the gap between productivity and wage growth was higher in goods, the two series were more strongly correlated in services. Finally, states with higher initial human capital experienced higher growth in both sectors.